Bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/lint.yaml

@@ -20,7 +20,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Super-Linter

.github/workflows/publish-beta.yml

@@ -18,7 +18,7 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Prepare

.github/workflows/publish-main.yml

@@ -18,7 +18,7 @@ jobs:
       app_version: ${{ steps.semvers.outputs.patch }} # set the app_version to be the PATCH updated version
       tag: ${{ steps.semvers.outputs.v_patch }} # set the tag to be the PATCH updated version.
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       # Get the current tag
@@ -89,7 +89,7 @@ jobs:
       - version
     steps:
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Merge develop -> main
         uses: devmasx/[email protected]
         with: